如何获取Grails应用程序中每个请求的内存使用情况

Question

是否有任何工具/插件可以识别配置文件，如内存，CPU和其他Grails Web应用程序中每个请求的使用信息。

Answer 1

试试这个：

public class CrunchifyJVMParameters {

    public static void main(String[] args) {
        int mb = 1024 * 1024; 
        // get Runtime instance
        Runtime instance = Runtime.getRuntime();
        System.out.println("***** Heap utilization statistics [MB] *****n");
        // available memory
        System.out.println("Total Memory: " + instance.totalMemory() / mb);
        // free memory
        System.out.println("Free Memory: " + instance.freeMemory() / mb);
        // used memory
        System.out.println("Used Memory: "
                + (instance.totalMemory() - instance.freeMemory()) / mb);
        // Maximum available memory
        System.out.println("Max Memory: " + instance.maxMemory() / mb);
    }
}

来源 https://crunchify.com/java-runtime-get-free-used-and-total-memory-in-java/